........... are used to separate the tramp oil (sump oil) from coolant.
a) Magnetic separators
b) Skimmers
c) Rotating spindles
d) All of these

Which of the following parameters influence the axial feed rate in centreless grinding?
a)Regulating wheel diameter
b)Angle between the axes of grinding and regulating wheels
c)Speed of the regulating wheel
d)All of these

Hydraulic oil is compressible ........
a)Not at all
b) Very much
c) Very Little
d) None of these

In simple gear trains the direction of rotation of driven gear is opposite to the direction of rotation of driving gear only if
a)Even number of idler gears are present
b) Odd number of idler gears are present
c) Any number of idler gears are present
d) None of these

Why is an idler gear used in gear trains?
a)To obtain minimum center distance between driving and driven shaft
b) To have required direction of rotation
c) Both (a) & (b)
d. None of these

Which of the following statements is/are true for gear drives?
a)They can be used for long center distances
b)They are used to transmit power between non-intersecting and parallel shafts
c) They cannot be used for high reduction ratios
d) All of these

Which gears are used to connect two intersecting shaft axes?
a)Crossed helical gear
b) Worm and worm wheel
c) Bevel gears
d) All of these

What is meant by gear ratio?
a) The ratio of pinion speed and gear speed
b) The ratio of number of teeth on pinion and number of teeth on gear
c)Both (a) & (b)
d)None of these

This type of fastener is designed to prevent movement between shafts and wheels.
a)Keys
b) Machine pins
c) Rivets
d) Knuckle

A mechanical device that stores energy, when deflected and to return the equivalent amount of energy when released is known as a ............
a)Blind rivet
b) Key way
c) Spring
d) Hammer
Joint strength in brazing operation is ...........
a) As high as in gas or arc welding
b) Not as high as in gas or arc welding
c) Higher than that of in gas or arc welding
d) Unpredictable

Which of the following is a soft solder?
a) Copper-zinc alloy
b) Nickel-silver alloy
c) Lead-tin alloy
d) All of these

When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be .................
a)Square threads
b) Knuckle threads
c) Acme threads
d) Buttress threads

Which of the following material has the maximum ductility?
a)Mild steel
b) Copper
c) Aluminium
d) Zinc

In a flange coupling, the flanges are coupled together by means of .................
a) Studs
b) Bolts and nuts
c) Headless taper bolt
d) None of these

An open belt drive is used when .................
a)Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
b) Shafts are arranged parallel and rotate in the same directions
c)Shafts are arranged at right angles and rotate in one definite direction
d)Shafts are arranged parallel and rotate in the opposite directions

When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 900, then they are known as ...............
a) Internal bevel gears
b) Angular bevel gears
c) Crown bevel gears
d) Mitre gears